Disk for mower blades



FIG. 1 is a top, front and right side perspective view of disk for mower blades, embodying my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof; and,

FIG. 4 is a right side elevational view thereof, the left side view being a mirror image of the side view shown. 

The ornamental design for a disk for mower blades, as shown and described. 